NWM v2.1 Retrospective Zarr Usage Example

NWM and USGS gage timeseries comparison

James McCreight

This example show retrieving a single (hourly) timeseries from the NWM v2.1 Retrospective zarr store and comparing it with USGS (daily) gage data at the same location.

The data access for a single gage is a bit slow if that is a repeated pattern (points desired are not in few spatial chunks). If you are doing an a at-a-gage analysis, then you might want to look at usage_example_rerechunk_chrtout.ipynb to get your work done on time.

Open the NWM "chrtout" file (on cheyenne)

Retrieve USGS streamflow observations

We select USGS 13317000 SALMON RIVER AT WHITE BIRD ID

Combined plot by water year